The First Lady of the United States presented a gardening-themed Top 10 list.

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Lady Michelle Obama presents the "Top Ten Fun Facts About Gardening" from the Map Room at the White House in Washington.

On Tuesday's edition of "The Late Show with David Letterman," First Lady of the United States and gardening enthusiast Michelle Obama appeared via satellite feed from the White House Map Room to promote her new book, "American Grown: The Story of the White House Kitchen Garden and Gardens Across America," and present a gardening-themed Top 10 list.

Some of Mrs. Obama's "fun facts" fell flat ("Gardening was invented in 1822 by Albert Gardener" got a tepid audience response), but most of the items on her list got big laughs.

The highlight of FLOTUS's appearance was her No. 1 "fun fact": "With enough care and effort you can grow your own Barack-oli." The kicker? The First Lady held up a green head of broccoli that resembled her husband.